Working-barrel for oil-well pumps.



D. DANIELS & L.. P. BURGEss. WORKING BARREL POR OIL WELL PUMPS.

APPLICATION FILED B EPVT. 13, 1909.

Patented Sept. 26, 191 1.

22? fesses.

UNITED STATES PATENT OFFICE.

DANIEL DANIELS AND LYSLE r. Bimenes, or Los ANGELES, CALIFORNIA.

WORKING-BARREL FOR OIL-WELL PUMPS.

Speciication of Letters Patent.

Patented Sept. 26,1911.

Application led September 13, 1909. Serial No. 517,527.

as to be readily removable for repairs or.

renewal, said sections being held in such manner as to insure properali'nement thereof and give a smooth interior surface to the barrel. j

A further object of the invention is to provide, in such ;aconstruction, means whereby the lining is's'upported within the outershell of the worki-'g barrel by plastic filling introduced automaticallyby the operation of the pump.

In the accompanying drawings illustrating the invention: Figure 1 is avertical section of the working barrel. Fig. 2 is a perspective of aninterlocking ring which is interposed between the successive sections ofthe lining. Fig. 3 is a perspective of the upper portion of one of thelining sections.

The'working barrel comprises an outer casing or shell 1 of cylindricalform, upper and lower collars 2 and 3 screwed thereto and a liningformed in sections 4 which engage with one another and with the upperand lower members 2, 3 as hereinafter described. i

` Each lining section 4 is formed as a cylindrical tubular member. Thelowermost section 4 fits within a circular seat or wall 6 on the lowercollar 3 with its end resting on a shoulder 7 on said collar, theinterior `diameter of said collar adjacent to said shoulder being thesame as that of the lining section, so as to form a continuous surfacewhen the section is placed in the collar. Said collar 3 isscrew-threaded as at 8 to screw onto the lower end of the barrel casing1 and is provided with a screw-threaded recess 9 at its lower end toreceive the suction pipe indicated at 10. The upper collar 2 has acircular seat or wall 11 fitting the upper end of the top section 4 anda shoulder 5 adjacent thereto against vhich the upper end of saidsection abuts. Said collar 2 is provided with' a screw-threaded portion12 screwing on the upper end of the barrel caslthe outer casing will notcontact with the linings and inter.

ing 1 and with a screw-threaded portion 13 at its upper end into whichscrews the delivery pipe 14. In the case of large barrels, the saidupper collar is furtherprovided with a perforation or passage 15extending through the body thereof from the space 21 above the shoulder5 to a point below the circular Wall 11, establishing working barrelspace to the space 17 between the lining section and the outer barrelcasing 1 for the purpose hereinafter set forth. This space between thelining sections 4 and 1f insures that said-casing fere with theiraccurate alinement, the lincommunication from theY ing sections beingsupported by their engagement with the circular walls 6 and 11, and theoutside side of the lining sections being adapted to fit said circularwalls but being smaller than the inside of'casing 1, so as to form saidspace. An opening closed by a screw plug 20 is provided through thefitting 2, leading from the space within the collar to the outsidecollar. j

Means are provided for interlocking the ends of adjacent sections 4 tohold them in rigid and alined relation. Said means preferably consistsof rings 18 adapted to tit in annular grooves 19 in the ends of theadjacent sections, each section, except the highest and lowest, havingan annular groove 19 in its upper and lower ends. The highest and lowestsections need not be provided with these grooves, except at the endwhich engages with another section.

The working barrel is assembled as follows: The outerbarrel casinglbeing screwed into the lower collar 3, the lowermost sec- A tion 4 isdropped into place within the barrel casing 1 and falls onto theshoulder 7 within the circular seat 6 which holds it in proper position.One of the rings 18 is then dropped on top of the first section andseated in the annular groove 19 thereof. 'lhe next lining section 4 isthen put in place with its bottom groove 19 engaging over said ring,said ring being of sufficient height to occupy and fit both the adjacentannular grooves and interlock the adjacent sections together. Thisbuilding-up operation continues until `the topmost section 4 is put inplace, whereupon the top collar 2 is screwed onto the barrel casing 1, asuitable mandrel, not shown, being placed within the lining during thisoperation to hold the parts in absolute alinement, this mandrel beingslightly I larger in diameter than the actual piston which -is to beemployed. When the collars have been screwed with moderate pressure inthis manner, thesaid mandrel is removed and the actual working piston isinserted and the collars are then screwed home with great pressure,binding the lining sections end to end in a substantially rigid andcontinuous lining. In the case of small working barrels, the rigiditythus afforded is suiicient for working purposes, but in the case oflarge .barrels it is desirable to provide further means for lateralsupport of the sections Within the outer casing and this is furnished bya plastic packing in the following manner: In the operation of oilpumpsthere is in-general considerable sand pumped with the oil and the oiland sand passing through the perforations 15 enters the space 17 betweenthe lining sections and the barrel casing 1 and fills said space so thateventually said space becomes occupied with a substantially solid, butsomewhat plastic, filling of sand and oil which serves to hold thelining sections in place and takes, to some extent, the lateral straintherefrom, communicating it to the outer barrel casing 1.

What we claim is: A

1. A working barrel comprising an outer cylindrical casing, upper fandlower collars screwed thereon, each of said collars having a circularinternal wall and a shoulder adjacent. thereto, and a lining for said'barrel consisting of sectionsr placed end to end, the upper and lowersections fitting within saidV circular walls and abutting against saidshoulders respectively, the outside surface of the'linings being smallerthan the inside of the outer casing, so that the linings are not incontact with said casing, means at the adjacent ends of said sectionsfor interlocking said sections, said sections having annular grooves attheir adjacent ends, and said interlocking means consisting of ringsslidably and removably fitting in said grooves.

2. A working barrel comprising an outer cylindrical casing, upper andlower collarsV screwed thereon, each of said collars having a circularinternal wall and a shoulder ad-l jacent thereto, a lining for saidbarrel consisting of sections placed end to end, the u per and lowersections fitting within said circular walls and abutting against saidshoulders respectively, the outside surface of the lining sections beingsmaller than the insideof 'the outer casing, so as to leave a spacetherebetween, means at the adjacent ends of said sections forinterlocking said sections, said sections 'having annular grooves attheir adjacent ends and said interlocking means consisting of ringsslidably and removably fitting in said grooves one of said collarshaving a passage establishing communication from the interior of theworking barrel to the spa'ce between the sections and the outer casingfor the purpose set. forth.

3. A working barrel comprising an outer cylindrical casing, upper andlower collars screwed thereon, each of said collars having a circularinternal wall and a shoulder adjacent thereto, a lining for said barrelconsisting of sections placed lend toA end, the

upper and lower sections tting within said circular walls and abuttingagainst said shoulders respectively, the outsidev surface of the liningsections being smaller than the inside of the outer casing, so as tovleave a space therebetween, means at the adjacent ends of said sectionsfor interlocking said sections, one of said collars having a passageestablishing communication from the interior of the working barrel tothe space between the sections and the outer casing for the purpose setforth, and said collar having a passage extending from the aforesaidpassage to the outside of the collar, and a removable plug for closingsaid passage.

In testimony whereof, we have hereunto set our hands .at Los Angeles,California, this 4th day of September 1909.

DANIEL DANIELS. LYSLE P. BURGESS.

4In presence of- ARTHUR P. KNIGHT, FRANK L. A. GRAHAM.

